diff --git a/weixin-java-channel/src/main/java/me/chanjar/weixin/channel/message/WxChannelMessageRouter.java b/weixin-java-channel/src/main/java/me/chanjar/weixin/channel/message/WxChannelMessageRouter.java
index 8ccc2c505..16fb0781c 100644
--- a/weixin-java-channel/src/main/java/me/chanjar/weixin/channel/message/WxChannelMessageRouter.java
+++ b/weixin-java-channel/src/main/java/me/chanjar/weixin/channel/message/WxChannelMessageRouter.java
@@ -178,7 +178,7 @@ public class WxChannelMessageRouter {
    * @param wxMessage 消息
    * @return 是否重复
    */
-  private boolean isMsgDuplicated(WxChannelMessage wxMessage) {
+  protected boolean isMsgDuplicated(WxChannelMessage wxMessage) {
     String messageId = this.generateMessageId(wxMessage);
     return this.messageDuplicateChecker.isDuplicate(messageId);
   }
@@ -188,7 +188,7 @@ public class WxChannelMessageRouter {
    *
    * @return 消息id
    */
-  private String generateMessageId(WxChannelMessage wxMessage) {
+  protected String generateMessageId(WxChannelMessage wxMessage) {
     StringBuilder sb = new StringBuilder();
     if (wxMessage.getMsgId() == null) {
       sb.append(wxMessage.getCreateTime())
diff --git a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/message/WxCpMessageRouter.java b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/message/WxCpMessageRouter.java
index e2daeab54..a2417ec86 100644
--- a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/message/WxCpMessageRouter.java
+++ b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/message/WxCpMessageRouter.java
@@ -258,7 +258,7 @@ public class WxCpMessageRouter {
     return this.route(wxMessage, new HashMap<>(2));
   }
 
-  private boolean isMsgDuplicated(WxCpXmlMessage wxMessage) {
+  protected boolean isMsgDuplicated(WxCpXmlMessage wxMessage) {
     StringBuilder messageId = new StringBuilder();
     if (wxMessage.getMsgId() == null) {
       messageId.append(wxMessage.getCreateTime())
diff --git a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/tp/message/WxCpTpMessageRouter.java b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/tp/message/WxCpTpMessageRouter.java
index 1df52149c..8887a23d5 100644
--- a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/tp/message/WxCpTpMessageRouter.java
+++ b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/tp/message/WxCpTpMessageRouter.java
@@ -278,7 +278,7 @@ public class WxCpTpMessageRouter {
     return this.route(wxMessage, new HashMap<>(2));
   }
 
-  private boolean isMsgDuplicated(final String suiteId, WxCpTpXmlMessage wxMessage) {
+  protected boolean isMsgDuplicated(final String suiteId, WxCpTpXmlMessage wxMessage) {
     StringBuilder messageId = new StringBuilder();
     messageId.append(wxMessage.getToUserName());
     if (wxMessage.getInfoType() != null) {
@@ -306,7 +306,8 @@ public class WxCpTpMessageRouter {
           .append("-").append(wxMessage.getCreateTime())
           .append("-").append(wxMessage.getFromUserName())
           .append("-").append(StringUtils.trimToEmpty(wxMessage.getEvent()))
-          .append("-").append(StringUtils.trimToEmpty(wxMessage.getEventKey()));
+          .append("-").append(StringUtils.trimToEmpty(wxMessage.getEventKey()))
+          .append("-").append(StringUtils.trimToEmpty(wxMessage.getExternalUserID()));
       }
     }
 
diff --git a/weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/message/WxMaMessageRouter.java b/weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/message/WxMaMessageRouter.java
index 6cd603929..3d81b6d66 100644
--- a/weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/message/WxMaMessageRouter.java
+++ b/weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/message/WxMaMessageRouter.java
@@ -173,7 +173,7 @@ public class WxMaMessageRouter {
     return this.route(wxMessage, new HashMap<>(2));
   }
 
-  private boolean isMsgDuplicated(WxMaMessage wxMessage) {
+  protected boolean isMsgDuplicated(WxMaMessage wxMessage) {
     StringBuilder messageId = new StringBuilder();
     if (wxMessage.getMsgId() == null) {
       messageId.append(wxMessage.getCreateTime())
diff --git a/weixin-java-mp/src/main/java/me/chanjar/weixin/mp/api/WxMpMessageRouter.java b/weixin-java-mp/src/main/java/me/chanjar/weixin/mp/api/WxMpMessageRouter.java
index 070e952c0..f2a28c668 100644
--- a/weixin-java-mp/src/main/java/me/chanjar/weixin/mp/api/WxMpMessageRouter.java
+++ b/weixin-java-mp/src/main/java/me/chanjar/weixin/mp/api/WxMpMessageRouter.java
@@ -315,7 +315,7 @@ public class WxMpMessageRouter {
     return this.route(appid, wxMessage, new HashMap<>(2));
   }
 
-  private boolean isMsgDuplicated(WxMpXmlMessage wxMessage) {
+  protected boolean isMsgDuplicated(WxMpXmlMessage wxMessage) {
     StringBuilder messageId = new StringBuilder();
     if (wxMessage.getMsgId() == null) {
       messageId.append(wxMessage.getCreateTime())